Pemphigus p-fremontii-midrib-gall

Complete

The inducer of this gall is unknown or undescribed.

Gallformers Code:

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Family: Aphididae (True Bug) | Genus: Pemphigus

Hosts: Populus fremontii / Populus trichocarpa / Populus tristis

Detachable: Integral

Color: yellow, green

Texture: hairless

Abundance:

Shape: globular

Season: Spring, Summer

Alignment: integral

Walls: slit

Location: lower leaf, leaf midrib

Form:

Cells:

Possible Range:

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Our ID Notes may contain important tips necessary for distinguishing this gall from similar galls and/or important information about the taxonomic status of this gall inducer.

Further Information (2)

Gallformers ID Notes - Gallformers Contributors (2026) [Link]

License: Public Domain / CC0

Plant Galls of the Western United States - Russo, Ronald A. (2021) [Link]

Created Feb 4, 2026 1:47 PM UTC • Last updated Feb 4, 2026 1:47 PM UTC